Recent results from the NA48/2 experiment are presented. The most precise measurement of the charged kaon semileptonic form factors has been obtained from 4.28 million Ke±3 and 2.91 million Kµ±3 events collected in 2004. A sample of 1663 events of the very rare decay K± ? µ±?e+e- has been collected in the region Mee > 140 MeV/c2 with negligible background. The measured model independent decay rate is in agreement with ChPT predictions. The branching ratio of the K± ? p±p0e+e- decay, never observed so far, has been obtained from a sample of 5000 candidates, in agreement with ChPT predictions.

New and recent results from NA48/2 / Madigozhin D.; Anzivino G.; Arcidiacono R.; Baldini W.; Balev S.; Batley J.R.; Behler M.; Bifani S.; Biino C.; Bizzeti A.; Bloch-Devaux B.; Bocquet G.; Cabibbo N.; Calvetti M.; Cartiglia N.; Ceccucci A.; Celeghini E.; Cenci P.; Cerri C.; Cheshkov C.; Cheze J.B.; Clemencic M.; Collazuol G.; Costantini F.; Cotta Ramusino A.; Coward D.; Cundy D.; Dabrowski A.; Dalpiaz P.; Damiani C.; de Beer M.; Derre J.; Dibon H.; DiLella L.; Doble N.; Eppard K.; Falaleev V.; Fantechi R.; Fidecaro M.; Fiorini L.; Fiorini M.; Fonseca Martin T.; Frabetti P.L.; Gatignon L.; Gersabeck E.; Gianoli A.; Giudici S.; Gonidec A.; Goudzovski E.; Goy Lopez S.; Hita-Hochgesand M.; Holder M.; Hristov P.; Iacopini E.; Imbergamo E.; Jeitler M.; Kalmus G.; Kekelidze V.; Kleinknecht K.; Kozhuharov V.; Kubischta W.; Lamanna G.; Lazzeroni C.; Lenti M.; Litov L.; Madigozhin D.; Maier A.; Mannelli I.; Marchetto F.; Marchevski R.; Marel G.; Markytan M.; Marouelli P.; Martini M.; Masetti L.; Mazzucato E.; Michetti A.; Mikulec I.; Misheva M.; Molokanova N.; Monnier E.; Moosbrugger U.; Morales Morales C.; Munday D.J.; Nappi A.; Neuhofer G.; Norton A.; Patel M.; Pepe M.; Peters A.; Petrucci F.; Petrucci M.C.; Peyaud B.; Piccini M.; Pierazzini G.; Polenkevich I.; Potrebenikov Yu.; Raggi M.; Renk B.; Rubin P.; Ruggiero G.; Savrie M.; Scarpa M.; Shieh M.; Shkarovskiy S.; Slater M.W.; Sozzi M.; Stoynev S.; Swallow E.; Szleper M.; Valdata-Nappi M.; Vallage B.; Velasco M.; Veltri M.; Venditti S.; Wache M.; Wahl H.; Walker A.; Wanke R.; Widhalm L.; Winhart A.; Winston R.; Wood M.D.; Wotton S.A.; Zinchenko A.; Ziolkowski M.. - ELETTRONICO. - (2017), pp. 65-70. (Intervento presentato al convegno 52nd Rencontres de Moriond on QCD and High Energy Interactions 2017 tenutosi a Aosta Valley, ita nel 2017).

New and recent results from NA48/2

Bizzeti A.
;
Calvetti M.
;
Celeghini E.
;
Cerri C.;Collazuol G.;Fantechi R.;Iacopini E.
;
Lenti M.
;
Mannelli I.;Marchevski R.
;
Peters A.;Raggi M.;Ruggiero G.
;
2017

Abstract

Recent results from the NA48/2 experiment are presented. The most precise measurement of the charged kaon semileptonic form factors has been obtained from 4.28 million Ke±3 and 2.91 million Kµ±3 events collected in 2004. A sample of 1663 events of the very rare decay K± ? µ±?e+e- has been collected in the region Mee > 140 MeV/c2 with negligible background. The measured model independent decay rate is in agreement with ChPT predictions. The branching ratio of the K± ? p±p0e+e- decay, never observed so far, has been obtained from a sample of 5000 candidates, in agreement with ChPT predictions.
2017
Proceedings of the 52nd Rencontres de Moriond - 2017 QCD and High Energy Interactions
52nd Rencontres de Moriond on QCD and High Energy Interactions 2017
Aosta Valley, ita
2017
Madigozhin D.; Anzivino G.; Arcidiacono R.; Baldini W.; Balev S.; Batley J.R.; Behler M.; Bifani S.; Biino C.; Bizzeti A.; Bloch-Devaux B.; Bocquet G....espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1406033
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